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| Number | Title | Issue Date |
| 7970028 | System and methods for speckle reduction A method of operating a laser source comprising is provided. The method reduces speckle contrast in a projected image by creating a plurality of statistically independent speckle patterns. The method comprises generating a plurality of sub-beams that define an optic... | 06/28/2011 |
| 7894496 | Gain media edge treatment to suppress amplified spontaneous emission in a high power laser A novel method and apparatus for suppressing ASE and/or parasitic oscillation modes in a laser is introduced. By roughening one or more peripheral edges of a solid-state crystal or ceramic laser gain media and by bonding such edges to a predetermined electromagnetic... | 02/22/2011 |
| 7881350 | Laser apparatus, laser irradiation method, and manufacturing method of semiconductor device It is an object to provide a laser apparatus, a laser irradiating method and a manufacturing method of a semiconductor device that can perform uniform a process with a laser beam to an object uniformly. The present invention provides a laser apparatus comprising an ... | 02/01/2011 |
| 7843978 | Passively Q-switched laser with adjustable pulse repetition rate A method is disclosed for varying a pulse repetition rate of a passively q-switched laser while maintaining other characteristics of the laser radiation. The laser is optically pumped with a sequence of pump pulses which includes alterations between non-zero power l... | 11/30/2010 |
| 7830932 | Internal resonator type SHG light source An internal resonator type SHG light source includes a pump light source which emits a pump light; a solid-state laser which absorbs the pump light and which emits a fundamental wave; an output mirror provided so as to face the solid-state laser, which forms a reson... | 11/09/2010 |
| 7697581 | Laser operation for survey instruments The performance of a laser scanner is optimized in the field by automatically determining appropriate laser parameters for the scan location. A laser control system uses information such as the environmental temperature to select an appropriate range of start points... | 04/13/2010 |
| 7680160 | Control circuit for optoelectronic module with integrated temperature control A microprocessor is used to control the temperature of a laser emitter and thereby regulate the wavelength of optical signals from the laser. A serial interface in the microprocessor provides input and output lines to a host device, and temperature lookup tables are... | 03/16/2010 |
| 7653098 | Semiconductor light emitting device and method for manufacturing the same A semiconductor laser chip is joined to an AlN sub-mount in a junction-down manner. The sub-mount is joined to a package. The AlN sub-mount is joined to a stem. The direction perpendicular to the irradiation direction of a laser beam emitted from the semiconductor l... | 01/26/2010 |
| 7643523 | Thermally self-correcting gain modules and associated systems and methods Aspects of the present invention are directed to the use of optical gain structures that include alternating layers of gain medium and transparent heat conductors in which the gain medium itself functions as a correction optic. The gain medium changes to an optimum ... | 01/05/2010 |
| 7542493 | Temperature compensated lasers A novel approach for providing temperature compensation for semiconductor lasers is disclosed. This approach utilizes reflectivity characteristics in the at least one of the mirrors of the semiconductor laser to provide temperature compensation to the device. ... | 06/02/2009 |
| 7526006 | Laser power control circuit A laser power control circuit that is constituted by CMOS transistors reduces variations in a laser power that is emitted from a semiconductor laser, which are caused by a mismatch of the transistors. An offset amount of a differential amplifier is digitally calcula... | 04/28/2009 |
| 7433375 | Laser trim and compensation methodology for passively aligning optical transmitter A method embodiment of the invention includes a scheme for trimming and compensation of a laser emitter in a fiber optic link. A laser emitter is provided. Also a reference optical power value is determined using data models of laser emitter performance generated by... | 10/07/2008 |
| 7425706 | Gamma-ray laser; induced gamma emission system and method A method for producing stimulated emission of gamma radiation comprising: 1] providing at least first and second gamma-radiation sources, both sources being in recoil-free first-excited nuclear levels and the second source being in... | 09/16/2008 |
| 7423247 | Automatic control of laser diode current and optical power output An automatic power control system provides a control signal that regulates the output power of at least one laser diode. Coarse adjustment of the control signal is provided by a first means, preferably a digital variable resistor, while fine adjustment and compensat... | 09/09/2008 |
| 7361978 | Laser diode packaging A laser diode package includes a heat sink, a laser diode, and an electrically nonconductive (i.e. insulative) substrate. The laser diode has an emitting surface and a reflective surface opposing the emitting surface. The laser diode further has first and second sid... | 04/22/2008 |
| 7357513 | System and method for driving semiconductor laser sources for displays A light engine includes a multi-color laser source having a set of semiconductor lasers. A controller synchronizes the operation of the laser source to operate in a color sequential order with a spatial modulator. ... | 04/15/2008 |
| 7358835 | Constant contact pressure PIM interface An interface that provides minimum changes in contact pressure over a thermal range is disclosed. The interface is a mated joint of given material, typically metallic, joined by a mechanical fastener or fasteners. The fastener(s) create contact pressure at the joint... | 04/15/2008 |
| 7349455 | Solid-state laser with compensation for thermooptical effects To compensate for undesirable thermooptical effects in optical pumping of solid-state laser rods, regions of the lateral surface are heated in such a way that reverse thermal gradients are created at these locations. This is achieved by providing said regions with a... | 03/25/2008 |
| 7346086 | Apparatus for monitoring the operating status of a laser The present invention provides an apparatus for monitoring a laser. The apparatus includes a plurality of sensors and a monitoring device capable of communicating with the plurality of sensors and configured to monitor an operating status of a laser. The plurality o... | 03/18/2008 |
| 7339970 | Surface light emitting element, optical module, light transmission device To provide a surface light emitting element capable of maintaining characteristics of the surface light emitting element and accurately detecting emitted light. A surface light emitting element includes a light emitting element part, provided on a semiconductor subs... | 03/04/2008 |
| 7330491 | Fault tolerant laser diode package A laser diode package (10) according to the present invention is tolerant of short-circuit and open-circuit failures. The laser diode package (10) includes a laser diode bar (12), a forward-biased diode (14), a heat sink (18), and ... | 02/12/2008 |
| 7321606 | Laser trim and compensation methodology for passively aligning optical transmitter A method includes a scheme for trimming and compensation for a laser emitter in a fiber optic link. Data models of laser performance are provided and used to determine a base power level. It is then confirmed that the base power level is satisfactory. If necessary, ... | 01/22/2008 |
| 7317741 | Amplified spontaneous emission ducts Amplified spontaneous emission (ASE) ducts are disclosed for use with various gain media. An ASE duct may be configured and arranged to remove ASE from solid state or liquid gain media and transmit the ASE to an exterior optical medium. The refractive index of an AS... | 01/08/2008 |
| 7317179 | Systems and methods to shape laser light as a homogeneous line beam for interaction with a film deposited on a substrate Systems and methods are disclosed for shaping and homogenizing a laser beam for interaction with a film. The shaping and homogenizing system may include a lens array and a lens that is positioned to receive laser light from the lens array and produce a respective el... | 01/08/2008 |
| 7310359 | Thermally self-correcting gain modules and associated systems and methods Aspects of the present invention are directed to the use of optical gain structures that include alternating layers of gain medium and transparent heat conductors in which the gain medium itself functions as a correction optic. The gain medium changes to an optimum ... | 12/18/2007 |
| 7291853 | Discharge produced plasma EUV light source An DPP EUV source is disclosed which may comprise a debris mitigation apparatus employing a metal halogen gas producing a metal halide from debris exiting the plasma. The EUV source may have a debris shield that may comprise a plurality of curvilinear shield members... | 11/06/2007 |
| 7287918 | Semiconductor laser module In a semiconductor laser module in which light emitted from a packaged semiconductor laser is incident on an optical fiber via a lens, the semiconductor laser, the lens, the optical fiber, and a holding member which holds the optical fiber are disposed in an integra... | 10/30/2007 |
| 7280572 | Semiconductor laser beam device A semiconductor laser beam device, comprising a stem type package having a base part and a heat sink part, wherein the heat sink part is cylindrically formed so as to be concentric to the base part, a groove is formed along the axial direction of the heat sink part,... | 10/09/2007 |
| 7277188 | Systems and methods for implementing an interaction between a laser shaped as a line beam and a film deposited on a substrate Systems and methods are disclosed for focusing a beam for an interaction with a film deposited on a substrate wherein the focused beam defines a short axis and a long axis. In one aspect, the system may include a detecting system to analyze light reflected from the ... | 10/02/2007 |
| 7277464 | Method and apparatus for controlling the output of a gas discharge laser system The present invention relates to a fluorine gas discharge laser system and control of replenishment of fluorine gas as the gas discharge laser operates and consumes fluorine. ... | 10/02/2007 |
| 7266137 | Laser gas replenishment method Output beam parameters of a gas discharge laser are stabilized by maintaining a molecular fluorine component at a predetermined partial pressure using a gas supply unit and a processor. The molecular fluorine is subject to depletion within the discharge chamber. Gas... | 09/04/2007 |
| 7260122 | Modeless wavelength-agile laser An external cavity laser may be swept rapidly in frequency and cavity length to prevent formation of modes providing improved spectral response and light characteristics. ... | 08/21/2007 |
| 7257136 | Laser apparatus A laser apparatus (100) for performing the laser machining operation by condensing the laser light output from a laser oscillator (3) is disclosed. A laser output value calculation unit calculates a laser output value (L1) based on a command val... | 08/14/2007 |
| 7257142 | Semi-integrated designs for external cavity tunable lasers Semi-integrated external cavity diode laser (ECDL) designs including integrated structures comprising a gain section, phase control section, and optional modulator section. Each integrated structure includes a waveguide that passes through each of the sections. A mi... | 08/14/2007 |
| 7239656 | Closed-loop purging system for laser A method of minimizing contamination of optical components of a laser resonator is disclosed. The resonator components are located in an enclosure, which may contain contaminants including water vapor and organic favor released by the optical components, mounts of t... | 07/03/2007 |
| 7236507 | Time-based adjustment of temperature control of laser to stabilize wavelengths Method and apparatuses for compensating for wavelength drift in a fiber-optic laser transmitter includes 1) controlling a temperature within the optoelectronic assembly at a defined level; 2) driving the optoelectronic assembly to emit light, wherein the emitted lig... | 06/26/2007 |
| 7236506 | Method and apparatus for compensating for temperature characteristics of laser diode in optical communication system A method and apparatus for compensating for temperature characteristics of a laser diode are disclosed. The laser diode may be used in a transmitter unit of a transceiver for optical signal transmission. The transceiver includes the laser diode and a monitor photodi... | 06/26/2007 |
| 7230964 | Lithography laser with beam delivery and beam pointing control The present invention provides a modular high repetition rate ultraviolet gas discharge laser light source with a beam delivery to a production line machine. The system includes an enclosed and purged beam path with beam pointing control for delivery the laser beam ... | 06/12/2007 |
| 7215491 | Optical path switching device and method An optical path switching method includes converging and irradiating, on a light absorption layer film provided in a thermal lens forming element including at least the film, each of a control light having a wavelength selected from a wavelength band which is absorb... | 05/08/2007 |
| 7209507 | Method and apparatus for controlling the output of a gas discharge MOPA laser system A method and apparatus are disclosed for controlling the output of a two chamber gas discharge laser comprising an oscillator gas discharge laser and an amplifier gas discharge laser that may comprise establishing a multidimensional variable state space comprising a... | 04/24/2007 |
